Optical Rotary Encoders

An optical rotary encoder is an angular position sensor. It converts an angular displacement directly into a digital form. There are usually three components in an optical rotary encoder: a light source (an LED), a sensor and a moveable disk.


How an optical rotary encoder works


Optical rotary encoders have a shaft mechanically coupled to an input driver. This driver rotates a disc fixed onto it which is marked with a succession of opaque and clear segments.

Light from infrared emitting diodes reaches the infrared receivers through the transparent slits of the rotating disc, creating an analogue signal. The signal is then amplified electronically and converted into digital form. This is then transmitted to the data processor. 


Uses for optical rotary encoders 


Optical rotary encoders make precise digital signals. This makes them a good option where image resolution matters, and explains their use in applications as varied as office equipment (in computer mice and photo copiers) and medical devices. 


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Description Price Pulses Per Revolution Encoder Reading Encoder Signal Supply Voltage Shaft Diameter Mounting Hole Diameter Shaft Length Mounting Type Shaft Style Termination Style Maximum Operating Speed Current Rating
RS Stock No. 878-0600
Mfr. Part No.62A15-02-060S
BrandGrayhill
PHP2,363.70
Each
units
- Quadrature 2-Bit Quadrature 5V dc 6.35 mm - 17.44mm Surface Mount Flat Stripped Cable 100rpm 30mA
RS Stock No. 182-5635
Mfr. Part No.REC16B25-201-C
PHP1,363.16
Each
units
25 - Digital Square Wave 5V dc 6 mm M9 16.5mm Through Hole Flat Wire Lead - 30mA
RS Stock No. 878-0577
Mfr. Part No.62A11-02-P
BrandGrayhill
PHP1,782.74
Each
units
- Quadrature 2-Bit Quadrature 5V dc 6.32 mm - 17.42mm - Flat Pin 100rpm 30mA
New
RS Stock No. 215-5737
Mfr. Part No.AEDR-8723-102
BrandBroadcom
PHP1,699.87
Each
units
- Incremental - - - - - Surface Mount - - - -
RS Stock No. 878-0426
Mfr. Part No.62AG11-L0-060C
BrandGrayhill
PHP1,123.52
Each
units
- Quadrature 2-Bit Gray Code 5V dc 6.32 mm - 17.45mm Panel Mount Flat Center Ribbon Cable with Connector 100rpm 30mA
RS Stock No. 878-0509
Mfr. Part No.62C1111-02-060C
BrandGrayhill
PHP5,377.58
Each
units
- Quadrature 2-Bit Quadrature 5V dc 6.35 mm - 26.98mm Panel Mount Flat Connector 100rpm 50 mA @ 5 V dc
RS Stock No. 878-0587
Mfr. Part No.62R30-01-P
BrandGrayhill
PHP5,972.40
Each
units
- Quadrature 2-Bit Quadrature 5V dc 6.35 mm - 17.45mm Panel Mount Flat Pin 100rpm 30 mA @ 5 V dc
RS Stock No. 202-0447
Mfr. Part No.RE30E-400-213-1
PHP4,697.63
Each
units
400 Incremental Digital Square Wave 5 - 12V dc 4 mm - - Panel Mount Plain Cable - -
RS Stock No. 878-0669
Mfr. Part No.60AD18-8-M-060C
BrandGrayhill
PHP4,339.13
Each
units
- Quadrature 2-Bit Quadrature 5V dc 6.35 mm - 14.78mm Panel Mount Flat Connector 100rpm 5 (Joystick) mA, 20 mA @ 5 V dc (Rotary)
RS Stock No. 878-0530
Mfr. Part No.25LB22-G
BrandGrayhill
PHP403.37
Each
units
- Absolute Gray Code - 6.35 mm - 19.05mm Panel Mount Flat - - 1.5 mA @ 115 V ac, 150 mA @ 14 V dc, 250 mA @ 28 V dc
RS Stock No. 202-4398
Mfr. Part No.REC16D25-205-B
PHP4,633.07
1 Box of 5
Box(es)
25 Incremental Digital Square Wave 5V dc 16 mm - - Panel Mount Flat Connector - -
RS Stock No. 878-0524
Mfr. Part No.62C2211-02-060C
BrandGrayhill
PHP4,771.85
Each
units
- Quadrature 2-Bit Quadrature 5V dc 6.35 mm - 26.98mm Panel Mount Flat Connector 100rpm 50 mA @ 5 V dc
RS Stock No. 878-0555
Mfr. Part No.62A15-02-060C
BrandGrayhill
PHP2,109.45
Each
units
- Quadrature 2-Bit Quadrature 5V dc 6.35 mm - 17.44mm Surface Mount Flat Connector 100rpm 30mA
RS Stock No. 878-0571
Mfr. Part No.62A22-02-020C
BrandGrayhill
PHP2,504.59
Each
units
- Quadrature 2-Bit Quadrature 5V dc 6.35 mm - 17.44mm Surface Mount Flat Connector 100rpm 30mA
RS Stock No. 878-0442
Mfr. Part No.62A15-01-090C
BrandGrayhill
PHP2,240.13
Each
units
- Quadrature 2-Bit Quadrature 5V dc 6.35 mm - 17.44mm Surface Mount Flat Connector 100rpm 30mA
RS Stock No. 878-0650
Mfr. Part No.60AD18-4-M-060C
BrandGrayhill
PHP4,339.13
Each
units
- Quadrature 2-Bit Quadrature 5V dc 6.35 mm - 14.78mm Panel Mount Flat Connector 100rpm 5 (Joystick) mA, 20 mA @ 5 V dc (Rotary)
RS Stock No. 182-5674
Mfr. Part No.JT22-320-500
PHP4,354.73
Each
units
- Absolute - 5V dc 3 mm M9 8mm - Flat Wire Lead - 40mA
RS Stock No. 202-4400
Mfr. Part No.REC20-25-201-1
PHP8,206.28
1 Box of 5
Box(es)
25 Incremental Digital Square Wave 5V dc 20 mm - - Panel Mount Slotted - - -
RS Stock No. 878-0489
Mfr. Part No.62S11-M5-050C
BrandGrayhill
PHP2,216.98
Each
units
- Quadrature 2-Bit Quadrature 5V dc 6.32 mm - 17.45mm Panel Mount Flat Center Ribbon Cable with Connector - 25 mA @ 5.25 V dc
RS Stock No. 789-9501
Mfr. Part No.ENT1D-D28-L00100L
BrandBourns
PHP3,462.59
Each
units
100 Incremental Digital Square Wave 5V dc 3.175 mm 0.99mm 22.23mm Bracket Mount Plain Axial PC Pin 3000rpm -